CVE-2015-6922Public exploitNetwork attack vector

Unauthenticated code execution via arbitrary-path ASP upload

Published Feb 17, 2020 · Updated Aug 6, 2024

Improper authentication in Kaseya VSA allows remote attackers to gain Master Admin access or execute arbitrary code without credentials. The forwarding service exposes LocalAuth/setAccount.aspx without enforcing authentication, while ConfigTab/uploader.aspx accepts an attacker-controlled full path and ASP content. Successful account creation grants control of managed endpoints, while the upload path executes code as the web-server account.

CVSS severity9.8
Critical
EPSS probability82.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Kaseya VSA allows remote attackers to gain Master Admin access or execute arbitrary code without credentials. The forwarding service exposes LocalAuth/setAccount.aspx without enforcing authentication, while ConfigTab/uploader.aspx accepts an attacker-controlled full path and ASP content. Successful account creation grants control of managed endpoints, while the upload path executes code as the web-server account.

The record

CVE
CVE-2015-6922
Published
Feb 17, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5Zero Day InitiativeAV:N/AC:L/Au:N/C:P/I:P/A:P
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application
T1505.003Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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